Mining Incidents

Milton Plant: 57 MSHA citations Metal/Non-Metal

Controlled by Heidelberg Materials AG
Milton, Montour County, PA  ·  Active
MSHA Mine ID: 3600141

Milton Plant has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets, plus health sampling and the full incident record.

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Fatalities
0
Total incidents
22
Years on record
1984–2026
Latest incident
Mar 2026
Compliance record
MSHA citations since 2000
57
citations
12
significant & substantial
$9,719
proposed penalties
$9,719
paid to date
100% of proposed penalties paid to date, a $0 gap.
Source: MSHA violations data, updated weekly.
Inspection activity
MSHA inspections since 2000
56
inspections on record
1,028
inspection hours
5.5
citations per 100 inspection hours
This rate is recorded citations divided by MSHA inspection hours, per 100 hours. It reflects inspection effort, not mine size or production.
57 citations across 1,028 inspection hours.
Source: MSHA inspections data, updated weekly.

Milton Plant has $10K in proposed MSHA penalties and $0 outstanding across 0 contested dockets.

Penalty disposition
Differences between proposed and paid penalties reflect both settlements and conference reductions and amounts still owed. Outstanding is the balance currently owed.
$10K
proposed penalties
$10K
current assessed
$10K
paid to date
$0
outstanding
54 assessments are final orders; 0 contested dockets.
As of the most recent assessment on 2026-06-09.
Source: MSHA assessed-violations and conference/litigation data, updated weekly.
Violation severity profile
Shares are computed over citations that carry the MSHA gravity and negligence coding; a small share of records are uncoded.
21.1%
significant & substantial
0.0%
high negligence or reckless
21.1%
reasonably likely or greater
33.3%
permanently disabling or fatal if injury occurs
Negligence coding: 1.8% none, 24.6% low, 73.7% moderate, 0.0% high, 0.0% reckless.
Source: MSHA violations gravity and negligence coding, updated weekly.
Health sampling
A sample is a point in time compliance measurement, not an individual exposure history. These figures describe MSHA sampling records and do not establish causation or personal dose.

Metal and nonmetal contaminants (personal samples)
Many samples are screening measurements of substances with no applicable exposure limit; they are counted as samples but excluded from every over-limit figure. Over-limit shares use only limit-tested samples.

Last sampled: 2024-07-24
0%
of limit-tested samples over the exposure limit
25
samples
16
limit-tested
Most sampled contaminants
  • Nuisance dust, total, <1% Qtz8
  • Quartz, respirable, >1% Qtz6
  • Respirable dust, <.1mg6
  • Nuisance dust, respirable, <1% Qtz4
Show the individual readings (25)
Date Contaminant Concentration Limit Conc / limit Occupation
2024-07-24 Quartz, respirable, >1% Qtz 0.17 Laborer, Bullgang
2024-07-24 Respirable dust, <.1mg 0 Front-end Loader Operator
2024-07-24 Unlisted Particulate, respirable, <1% Qtz 0.37 Crusher Oper/Worker
2023-07-12 Nuisance dust, total, <1% Qtz 0.26 10 0.03 Truck Driver
2023-07-12 Nuisance dust, total, <1% Qtz 6.27 10 0.63 Laborer, Bullgang
2023-07-12 Nuisance dust, total, <1% Qtz 0 10 0.00 Front-end Loader Operator
2021-12-02 Quartz, respirable, >1% Qtz 0.34 Laborer, Bullgang
2021-12-02 Nuisance dust, total, <1% Qtz 2.5 10 0.25 Backhoe Operator
2021-12-02 Nuisance dust, total, <1% Qtz 1.65 10 0.17 Truck Driver
2021-12-02 Nuisance dust, total, <1% Qtz 0.63 10 0.06 Crusher Oper/Worker
2020-01-16 Nuisance dust, total, <1% Qtz 0.13 10 0.01 Front-end Loader Operator
2020-01-16 Nuisance dust, total, <1% Qtz 0 10 0.00 Front-end Loader Operator
2017-12-14 Nuisance dust, respirable, <1% Qtz 0.72 10 0.07 Utility Man
2017-12-14 Respirable dust, <.1mg 0 Front-end Loader Operator
2014-06-26 Quartz, respirable, >1% Qtz 0.32 1.44 0.22 Laborer, Bullgang
2014-06-26 Respirable dust, <.1mg 0 Laborer, Bullgang
2014-06-26 Nuisance dust, respirable, <1% Qtz 0.18 10 0.02 Crusher Oper/Worker
2009-06-18 Respirable dust, <.1mg 0 Crusher Oper/Worker
2006-05-18 Quartz, respirable, >1% Qtz 0.21 0.95 0.22 Crusher Oper/Worker
2006-05-18 Quartz, respirable, >1% Qtz 0.35 1.47 0.24 Utility Man
2003-10-16 Nuisance dust, respirable, <1% Qtz 0.42 10 0.04 Front-end Loader Operator
2003-10-16 Respirable dust, <.1mg 0 Front-end Loader Operator
2003-10-16 Quartz, respirable, >1% Qtz 0.37 2.16 0.17 Truck Driver
2003-10-16 Nuisance dust, respirable, <1% Qtz 0.21 10 0.02 Laborer, Bullgang
2003-10-16 Respirable dust, <.1mg 0 Crusher Oper/Worker
Source: MSHA respirable dust, quartz, and noise sampling records, updated weekly. Metal/nonmetal contaminant figures come from MSHA's Personal Health Samples and Area Samples files (public record), updated weekly.

Milton Plant recorded 0.00 reportable injury cases per 100 full-time workers in 2025.

Injury rate, 2025
This rate is reportable injury cases per 100 full-time-equivalent workers per year, computed as 200,000 times cases divided by MSHA operator-reported employee-hours. Cases are injuries MSHA graded degree 01 through 07; accident-only events that hurt no one are excluded, and so are contractor injuries, whose hours do not attach to a single mine. Rates begin in 2000, when quarterly employment reporting starts, and are withheld below 20,000 hours in a year.
0.00
total case rate
0.00
days-away rate
0.000
fatality rate
Below average. The US metal and nonmetal mining average was 1.65 and the all-US-mining average was 1.97 cases per 100 workers.
In Pennsylvania, metal and nonmetal mining averaged 2.07 cases per 100 workers that year.
Under 100,000 employee-hours were reported that year, so a single case moves the rate by two or more. Read the figure as approximate.
Year total case rate days-away fatal
2025 * 0.00 0.00 0.000
2024 * 0.00 0.00 0.000
2023 * 5.54 0.00 0.000
2022 * 0.00 0.00 0.000
2021 * 0.00 0.00 0.000
2020 * 6.79 0.00 0.000
2019 * 0.00 0.00 0.000
2018 * 7.05 0.00 0.000
* Fewer than 100,000 employee-hours that year; the rate is less stable.
Source: injury cases from MSHA accident and injury records; employee-hours from MSHA quarterly employment reports. Rate is cases per 100 full-time-equivalent workers, operator employees only.
Ownership history
  1. Lycoming Silica Sand Company 1950 to 1988
  2. Heidelberg Materials Northeast LLC 1988 to present
Source: MSHA controller and operator history, updated weekly.
Workforce and production
Year Employees
2026 15
2025 14
2024 14
2023 15
2022 15
2021 15
2020 15
2019 15
2018 15
2017 15
2016 15
2015 14
2014 15
2013 15
2012 14
2011 14
2010 12
2009 10
2008 12
2007 14
2006 12
2005 12
2004 12
2003 14
2002 15
2001 15
2000 16
Source: MSHA quarterly employment and production, updated weekly.

Milton Plant sits in Montour County, Pennsylvania, where the Census mining category is 0.1% of county employment.

Local economic context
County figures come from the US Census Bureau's American Community Survey, 5-year pooled estimates, so the 2023 vintage covers 2019 through 2023. The Census category is 'mining, quarrying, and oil and gas extraction', which is broader than MSHA jurisdiction and includes oil and gas workers no mine employs. These figures describe the surrounding county, not this mine, and are not a factor in any specific incident.
Montour County, Pennsylvania · Population 18,079
0.1%
Mining share of county employment
$72,926
Median household income
Source: US Census Bureau, American Community Survey 2023 5-year estimates.
Quarterly safety rates
Citations per million reported employee-hours. Rates begin in 2000, when MSHA's quarterly employment data starts; earlier incidents are counted but cannot be rate-adjusted. Quarters under 100,000 reported hours are greyed: too few hours for a stable rate.
Citations per million employee-hours, as reported to MSHA
Quarter Hours worked Citations S&S Per 1M hrs
2026 Q2 6,819 3 1 439.9
2026 Q1 7,981 0 0 0.0
2025 Q4 10,178 2 1 196.5
2025 Q3 8,985 3 1 333.9
2025 Q2 8,387 0 0 0.0
2025 Q1 6,951 0 0 0.0
2024 Q4 9,025 1 0 110.8
2024 Q3 7,518 2 1 266.0
Show 98 earlier quarters
Quarter Hours worked Citations S&S Per 1M hrs
2024 Q2 7,703 0 0 0.0
2024 Q1 6,718 0 0 0.0
2023 Q4 11,234 0 0 0.0
2023 Q3 9,129 2 1 219.1
2023 Q2 7,653 0 0 0.0
2023 Q1 8,092 4 2 494.3
2022 Q4 8,284 0 0 0.0
2022 Q3 9,012 0 0 0.0
2022 Q2 9,726 2 0 205.6
2022 Q1 7,023 0 0 0.0
2021 Q4 7,463 0 0 0.0
2021 Q3 8,688 1 0 115.1
2021 Q2 8,973 0 0 0.0
2021 Q1 6,412 0 0 0.0
2020 Q4 7,445 0 0 0.0
2020 Q3 8,312 1 1 120.3
2020 Q2 7,937 0 0 0.0
2020 Q1 5,764 2 1 347.0
2019 Q4 7,647 0 0 0.0
2019 Q3 10,566 0 0 0.0
2019 Q2 8,563 1 0 116.8
2019 Q1 5,431 1 0 184.1
2018 Q4 7,539 0 0 0.0
2018 Q3 8,335 0 0 0.0
2018 Q2 7,167 2 0 279.1
2018 Q1 5,337 0 0 0.0
2017 Q4 7,827 1 0 127.8
2017 Q3 10,370 0 0 0.0
2017 Q2 9,524 0 0 0.0
2017 Q1 5,553 1 0 180.1
2016 Q4 6,293 0 0 0.0
2016 Q3 9,149 0 0 0.0
2016 Q2 8,762 0 0 0.0
2016 Q1 4,232 0 0 0.0
2015 Q4 6,688 0 0 0.0
2015 Q3 7,854 1 0 127.3
2015 Q2 7,457 0 0 0.0
2015 Q1 5,014 1 0 199.4
2014 Q4 6,847 0 0 0.0
2014 Q3 8,791 0 0 0.0
2014 Q2 7,976 0 0 0.0
2014 Q1 5,455 0 0 0.0
2013 Q4 7,414 1 0 134.9
2013 Q3 7,384 0 0 0.0
2013 Q2 7,384 1 1 135.4
2013 Q1 5,785 3 0 518.6
2012 Q4 7,178 0 0 0.0
2012 Q3 8,800 0 0 0.0
2012 Q2 8,350 1 0 119.8
2012 Q1 6,775 2 0 295.2
2011 Q4 11,639 0 0 0.0
2011 Q3 8,216 2 1 243.4
2011 Q2 8,400 0 0 0.0
2011 Q1 4,722 2 0 423.5
2010 Q4 9,567 0 0 0.0
2010 Q3 8,142 0 0 0.0
2010 Q2 7,001 1 0 142.8
2010 Q1 3,472 0 0 0.0
2009 Q4 4,669 0 0 0.0
2009 Q3 6,476 0 0 0.0
2009 Q2 6,674 3 0 449.5
2009 Q1 2,690 0 0 0.0
2008 Q4 5,100 0 0 0.0
2008 Q3 8,479 0 0 0.0
2008 Q2 7,051 0 0 0.0
2008 Q1 4,499 0 0 0.0
2007 Q4 9,161 0 0 0.0
2007 Q3 10,121 0 0 0.0
2007 Q2 9,496 0 0 0.0
2007 Q1 7,525 0 0 0.0
2006 Q4 8,218 0 0 0.0
2006 Q3 9,268 0 0 0.0
2006 Q2 6,962 1 0 143.6
2006 Q1 4,852 0 0 0.0
2005 Q4 4,643 2 0 430.8
2005 Q3 7,360 0 0 0.0
2005 Q2 7,614 0 0 0.0
2005 Q1 4,762 0 0 0.0
2004 Q4 6,771 0 0 0.0
2004 Q3 8,666 0 0 0.0
2004 Q2 8,383 0 0 0.0
2004 Q1 5,169 0 0 0.0
2003 Q4 7,084 0 0 0.0
2003 Q3 8,534 0 0 0.0
2003 Q2 8,423 0 0 0.0
2003 Q1 4,968 1 0 201.3
2002 Q4 6,934 0 0 0.0
2002 Q3 10,686 0 0 0.0
2002 Q2 9,112 0 0 0.0
2002 Q1 6,411 1 0 156.0
2001 Q4 8,880 0 0 0.0
2001 Q3 12,683 0 0 0.0
2001 Q2 11,102 0 0 0.0
2001 Q1 5,674 0 0 0.0
2000 Q4 6,644 0 0 0.0
2000 Q3 11,233 0 0 0.0
2000 Q2 13,157 4 1 304.0
2000 Q1 8,147 0 0 0.0
No fatalities recorded at this mine.

Reportable incidents

22 on file

2026 · 1 incident

March 26, 2026 PA · Metal/Non-Metal groundman, yardman HANDLING OF MATERIALS
Heidelberg Materials Northeast LLC · Struck against stationary object

Employee was in the rollout chute removing a piece of 6" metal used for making 57's and then added plate steel for making 67's while doing this EE struck their ribs left side and stated they thought they felt a pop in their ribs and was having trouble breathing.

2023 · 1 incident

November 14, 2023 PA · Metal/Non-Metal crusher attendant/operator, pan feeder operator/worker HANDLING OF MATERIALS
Heidelberg Materials Northeast LLC · Struck by flying object

Employee was struck by a small piece of metal in their nose as EE was helping on changing an anvil in the crusher. The employee had to have the metal removed and stitches for wound closure.

2020 · 1 incident

April 22, 2020 PA · Metal/Non-Metal quality control technician, laboratory technician, laboratory assistant FALLING/SLIDING/ROLLING MATERIALS
Heidelberg Materials Northeast LLC · Struck by falling object

Employee was struck by a falling rock from the level above were EE was working. The employee received a cut to the back of EE's head which required 2 stitches to close.

2018 · 1 incident

January 2, 2018 PA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Heidelberg Materials Northeast LLC · Over-exertion (Not Elsewhere Classified)

Employee was in impact crusher welding - employee was on knees. When EE stood up EE felt pain in lower back and left leg.

2009 · 3 incidents

October 7, 2009 PA · Metal/Non-Metal prep plant foreman, supervisor, mill plant supervisor, kiln supervisor MACHINERY
Heidelberg Materials Northeast LLC · Caught in, under or between a moving and a stationary object

EE was working on front suspensions of pickup truck. He was holding a breaker bar with socket on a nut while other EE was using a 1" drive air powered impact wrench to loosen nut when the breaker bar spun pinching ring finger between shock and breaker bar.

August 18, 2009 PA · Metal/Non-Metal superintendent HANDLING OF MATERIALS
Heidelberg Materials Northeast LLC · Caught in, under or between a moving and a stationary object

EE was guiding inside part of breaker into case of main breaker when it pushed forward pinching finger between both parts cutting end of little finger almost off.

2003 · 1 incident

June 9, 2003 PA · Metal/Non-Metal welder (shop) MACHINERY
Heidelberg Materials Northeast LLC · Contact with hot objects or substances

EE WAS USING TORCH TO CUT A BUSHING INSIDE A BREAKER HAMMER WHEN IT BLEW BACK HOT GREASE THAT WAS TRAPPED INSIDE THE BUSING AND CASE CAUSING HOT GREASE TO LAND ON HIS NECK.

1997 · 1 incident

1995 · 1 incident

1994 · 1 incident

May 18, 1994 PA · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDLING OF MATERIALS
Heidelberg Materials Northeast LLC · Absorption of radiations, caustics, toxic and noxious substances

EMPLOYEE WAS REMOVING WATER PIPES SO CRANE COULD REMOVE STONE CRUSHER. AS EMPLOYEE WAS REMOVING WATER PIPES A CLUMP OF LIME DUST FELL OFF OF SIDE OF STONE BIN STRIKING EMPLOYEE IN RIGHT EYE U NDER SAFETY GLASSES.

1993 · 2 incidents

November 18, 1993 PA · Metal/Non-Metal crane operator, mobile equipment operator (meo), dragline operator, dropball operator, rigger HANDTOOLS (NONPOWERED)
Heidelberg Materials Northeast LLC · Struck by flying object

EMPLOYEE WAS LOADING WITH SHOVEL AND DIRT FLEW IN RIGHT EYE. THEY REMOVED A PIECE OF STONE FROMHIS RIGHT EYE.

July 9, 1993 PA · Metal/Non-Metal welder (shop) MACHINERY
Heidelberg Materials Northeast LLC · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS DOING VARIOUS JOBS THROUGHOUT THE DAY. HE DID NOT REALIZE ANYTHING WAS IN HIS EYE UNTIL LATE IN THE DAY. IRRITATION BECAME MORE INTENSE AND HE DECIDED TO GO FOR AN EXAMINATION. DO OCTOR FOUND A PIECE OF STEEL IN HIS RIGHT EYE.

1992 · 2 incidents

December 21, 1992 PA · Metal/Non-Metal coal/ore shovel operator, shoveler, power shoveler HANDLING OF MATERIALS
Heidelberg Materials Northeast LLC · Over-exertion in pulling or pushing objects

EMPLOYEE WAS RUNNING DROPBALL. HE WAS PULLING ON THE LEVER AND INJURED HIS RIGHT SHOULDER.

July 29, 1992 PA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech MACHINERY
Heidelberg Materials Northeast LLC · Over-exertion in pulling or pushing objects

54736YEE WAS PULLING ON LEVER ON THE DROPBALL AS HE WAS RUNNING IT.

1991 · 1 incident

June 6, 1991 PA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDLING OF MATERIALS
Heidelberg Materials Northeast LLC · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS OPENING THE CHUTE ON THE 3A BIN.HE PULLED ON THE LEVER TO LOAD A TRUCK AND SPRAINED HIS RIGHT WRIST.

1990 · 1 incident

September 26, 1990 PA · Metal/Non-Metal maintenance man, mechanic, repair/serviceman, boilermaker, fueler, tire tech, field service tech HANDTOOLS (NONPOWERED)
Heidelberg Materials Northeast LLC · Over-exertion (Not Elsewhere Classified)

EMPLOYEE WAS PRYING ON HOIST CYLINDER TO PUT PIN IN MACK STOCK TRUCK.

1989 · 2 incidents

October 12, 1989 PA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver MACHINERY
Heidelberg Materials Northeast LLC · Struck by falling object

TWO EMPLOYEES WERE CUTTING DOWN TREES ON THE HILL AT THE EAST SIDE OF THE QUARRY WHEN THE TREE BEING CUT BY THE OTHER MAN FELL ON TOP OF I,NAME TWISTING HIS RIGHT ANKLE.

August 1, 1989 PA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Heidelberg Materials Northeast LLC · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS CUTTING A HOLE IN A BUCKET OF GREASE WITH A POCKET KNIFE, WHEN THE KNIFE SLIPPED AND CUT HIS LEFT ARM AT THE WRIST.

1988 · 1 incident

May 9, 1988 PA · Metal/Non-Metal haul/off road/coal/ore/pit/quarry/rock/rubber tire truck driver, transportation truck driver HANDTOOLS (NONPOWERED)
Lycoming Silica Sand Company · Caught in, under or between (Not Elsewhere Classified)

EMP. WAS PUTTING TOP ON CONE CRUSHER. CHAIN HOIST SLIPPED AND TOP OF CHUTE WENT U IN THE AIR AND CAUGHT EMP. RIGHT INDEX FINGER CUTTING IT ON THE CHUTE ABOVE.

1986 · 1 incident

June 11, 1986 PA · Metal/Non-Metal warehouseman, bagger, palletizer/stacker, store keeper, packager, fabricator, cleaning plant operator MACHINERY
Lycoming Silica Sand Company · Struck by rolling or sliding object

EMPL BREAK WEDG9D MATERIAL TO ALLOW MATERIAL TO FEED INTO CRUSHER.ROCK LYING ON REAR DOME AREA.WHILE BREAKING WEDGED ROCK,ROCK LYING ON DOME SLID AND CAUGHT EMPL RIGHT ANKLE.PRECAUTIONS TAKEN SUPT ASSISTING3EMPL.ROCK LYING ON DOME CHECKED FOR STABILITY AND DETERMINED OK.WHEN ROCK BROKE IT FELL INTO CRUSHER AND STARTED BREAKING CAUSING VIBRATIONS LOOSENING ROCK ON DOME CAUSING IT T

1984 · 1 incident

August 28, 1984 PA · Metal/Non-Metal beltman, conveyor man, conveyor belt worker, mobile bridge carrierman, feeder operator, conveyor rider HANDTOOLS (NONPOWERED)
Lycoming Silica Sand Company · Struck by... (Not Elsewhere Classified)

EMPLOYEE WAS USING A COME-A-LONG TO LOOSEN UP WHEEL OF A PLUGGED CAGE MILL. HE WAS USING HIS FOOT TO PUSH ON THE COME-A-LONG (BECAUSE IT WAS PISITIONED AT FLOOR LEVEL FOR CONNECTION). HIS FOOT SLIPPED OFF THE HANDLE, BRUISING AND LACERATING HIS LEFT SHIN.